Hồ Quốc Phong * , Trần Đông Âu , Trần Sương Ngọc , Huỳnh Liên Hương , Huỳnh Thị Ngọc Hiền Nguyễn Trọng Tuân

* Tác giả liên hệ (hqphong@ctu.edu.vn)

Abstract

Searching for potential feedstock for biodiesel synthesis is important today and microalgae Chlorella sp. can be used to produce biodiesel due to its high capacity of lipid accumulation. Therefore, this study was conducted to investigate the effects of culture conditions on the growth and lipid accumulation of Chlorella sp. such as light intensity, time, temperature and salinity. The results showed that the obtained concentration of microalgae was 0.306 g/L and the accumulated lipid was up to 35.86% when it was cultured under the conditions of 1342 lux, 25ºC, salinity of 0‰ and incubation time of 8 days. In addition, the fatty acid composition of Chlorella sp. was mainly C16 - C18, which are suitable for biodiesel synthesis.
Keywords: Lipid, Chlorella sp., biodiesel, algae

Tóm tắt

Việc tìm kiếm nguồn nguyên liệu tiềm năng cho quá trình tổng hợp biodiesel là rất cần thiết hiện nay và vi tảo Chlorella sp. có thể sử dụng để tổng hợp biodiesel do có khả năng tích lũy nhiều chất béo. Do đó, nghiên cứu này được tiến hành nhằm khảo sát các điều kiện ảnh hưởng đến sự sinh trưởng và tích lũy chất béo của vi tảo Chlorella sp. như cường độ sáng, thời gian, nhiệt độ và độ mặn của nước. Kết quả cho thấy rằng vi tảo Chlorella sp. có thể đạt được nồng độ sinh khối 0,306 g/L với chất béo tích lũy lên đến 35,86% khi được nuôi cấy ở điều kiện cường độ chiếu sáng 1342 lux, nhiệt độ 25ºC, độ mặn của nước 0‰ và thời gian nuôi cấy là 8 ngày. Thêm vào đó, thành phần acid béo của vi tảo Chlorella sp. chủ yếu là C16 - C18, đây là nguyên liệu phù hợp cho tổng hợp biodiesel.
Từ khóa: Chất béo, Chlorella sp., diesel sinh học, vi tảo

Article Details

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